Disclosed is a backup heat-dissipating system having a serial fan which can be assembled easily, fastly and conveniently, and can effectively eliminate the interference between fans and prevent the air leakage resulting from the failed fan unit. A temperature probe is also submerged in the LNG. The delivery system is positioned to allow for placement of the occlusive material into the body conduit. For instance, such paper wrappers formed according to the present invention typically have a Diffusion Conductance Index of less than about 15 cm1 and a Static Burn Rate of less than about 5 millimeters per minute. The input method includes responding to the ON operation of the pointing device maintained in a certain period and bringing about a latch state in which the pointing device remains in the ON state for the application even if the OFF operation of the pointing device has taken place; and executing a program for informing a user that the latch state has been brought about. A method of assembly of the device and a kit comprising the device.